dual fan setup?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 03-25-2003, 07:28 PM

I have seen then ones that vendors on the board sell, but has anyone ever used fans from a donor vehicle? I was told by a wise mechanic, that you could use dual fans from a dodge caravan for this upgrade. Has anyone done this on a 67-72?

gmc67swb · 03-25-2003, 08:15 PM

I HAD A BUDDY RUNNING THEM ON A CAMARO. WORKED FINE. IN FACT, I HAVE THEM NOW. I'M JUST NOT RUNNING THEM BECAUSE THEY WERE TOO WIDE. THEY WENT A LITTLE PAST MY FINNED AREA AND ONTO THE TANKS ON THE RADIATOR. SO THEY WOULDN'T SIT FLUSH. IF YOU WERE LOCAL I WOULD GIVE THEM TO YOU. I'VE BEEN SITTING ON THEM FOR A WHILE. JUST A NOTE I'M RUNNING AN AFTERMARKET RADIATOR(GRIFFIN), WITH A SINGLE FAN AND A THERMOSTAT. NEVER GOT HOT YET.

Blue Beard · 03-25-2003, 11:37 PM

What all is required to make this work on our trucks..............?

minibike · 03-25-2003, 11:45 PM

I have the radiator and fans out of a 94 camaro.

Blue Beard · 03-25-2003, 11:55 PM

Do you think the camaro setup would work with the stock truck radiator....?

minibike · 03-26-2003, 12:01 AM

It is almost exactly the same size.

minibike · 03-26-2003, 12:06 AM

It is about 18" tall by 25" wide by 5-1/2" deep. I have the 94 camaro radiator in mine...all I had to do was move the radiator supports (parts with rubber in them) out a little.

minibike · 03-26-2003, 12:11 AM

not the best pic...

minibike · 03-26-2003, 12:13 AM

another...

Low69CST · 03-26-2003, 01:00 AM

i have a flexalite set up on my 400 small block. had no problems at all

**Yukon Jack** · 03-26-2003, 10:16 AM

Someone mentioned in the past that lated 80's to early 90's Furd Taurus use a 2 dual speed fans. Have also heard that Lincoln Mark IV's have a very powerful setup. Check out this link http://www.geocities.com/smithmonte/...rkVIII_Fan.htm

dubie · 03-26-2003, 10:24 AM

link no worky

Anyone have a wirng diagram for a dual fan setup? Seems like you should run a 20 amp inline fuse from each fan, have it hooked to an thermostat and an in cab switch??

Jesse 67 c-10 · 03-26-2003, 12:57 PM

I got 2 fans from a chevy lumina, earlly 90's, they move a lot of air! made my own brakets cause they're set in some plastic crap but they work great. when I hit the switch if its hot idleing it goes from 200 to 180 in less than a min and keeps dropping after. You need a heavy duty relay, when you get the fans hook em up with an old ammeter to see the draw, then you'll know what relay and fuse to get. Good luck!
Jesse

Lippyp · 03-26-2003, 01:08 PM

I'd also put a relay in the circuit to each fan, that way you aren't putting a huge current through your thermostat/switch or trying to thread heavy guage wires through your bulkhead.

The single electric fan in my truck (from something Japanese!) was fitted by the previous owner and was wired without a relay. One day I put my hand up behind the dashboard switch (no thermostatic controller yet) in traffic and found that the switch contacts were too hot to touch due to the huge current drawn by the fan going through the switch. Also when turned off the fan would windmill in the ram air coming in the grille and act as a dynamo and light the switch up...weird!

I think Wes has posted a wiring diagram up here before, I'd jsut do a search on electric fan and see what threads you get.

**Yukon Jack** · 03-26-2003, 01:14 PM

Linky worky for me

Blue Beard · 03-26-2003, 01:21 PM

Not nice to mess with the board members Yukon.................

tried the link, said it would be back in an hour.............sounds like someone went to lunch...........

**Yukon Jack** · 03-26-2003, 01:27 PM

Good ole Geocities! It was in my cache, that why I was still able to pull it up, dang it Dubie, you got me on that one!

Do try to check the link out, there is lots of good info in it on this setup.

Blue Beard · 03-26-2003, 01:43 PM

Yukon, site is back up and running......

That's alot of info to Diegest at one time...........

Long Knight · 03-26-2003, 02:50 PM

Here is a pic of an elec. fan someone posted a while back that I was going to use for imspiration.

HotRod929 · 03-26-2003, 04:00 PM

I think that picture of the dual fan setup is sold by www.classicheartbeat.com as a kit. I think Im gonna go that route with my truck.

HotRod

Blue Beard · 03-26-2003, 04:17 PM

long knight................that would be inspiration...................

XXL · 03-26-2003, 04:54 PM

Anyone using electric fans care to comment on the noise factor, if any??

Kenneth

Long Knight · 03-26-2003, 04:58 PM

Right now mine goes WHAAAAAAAAAA! I heard an electric one come on once and it went WHrrrrrrrrr. Hope that helps.

Do electric fans help with mpg?

dubie · 03-26-2003, 05:10 PM

I heard they also help with a small HP gain

Edmond · 03-26-2003, 05:35 PM

Quote:

Originally posted by Long Knight
Here is a pic of an elec. fan someone posted a while back that I was going to use for imspiration.

Are these fans 'sucking' the air through? I'm asking because I have two fans from a BMW and those used to be fitted in front of the radiator 'blowing' the air through. Does it matter? Which is the better setup?

Thanks.

Cya,
Edmond

03-25-2003, 07:28 PM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	dual fan setup?? I have seen then ones that vendors on the board sell, but has anyone ever used fans from a donor vehicle? I was told by a wise mechanic, that you could use dual fans from a dodge caravan for this upgrade. Has anyone done this on a 67-72? __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

03-25-2003, 08:15 PM	#2
gmc67swb Registered User Join Date: Feb 2003 Location: Mesquite, Tx Posts: 396	I HAD A BUDDY RUNNING THEM ON A CAMARO. WORKED FINE. IN FACT, I HAVE THEM NOW. I'M JUST NOT RUNNING THEM BECAUSE THEY WERE TOO WIDE. THEY WENT A LITTLE PAST MY FINNED AREA AND ONTO THE TANKS ON THE RADIATOR. SO THEY WOULDN'T SIT FLUSH. IF YOU WERE LOCAL I WOULD GIVE THEM TO YOU. I'VE BEEN SITTING ON THEM FOR A WHILE. JUST A NOTE I'M RUNNING AN AFTERMARKET RADIATOR(GRIFFIN), WITH A SINGLE FAN AND A THERMOSTAT. NEVER GOT HOT YET. __________________ GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd

03-25-2003, 11:37 PM	#3
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	What all is required to make this work on our trucks..............? __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

03-25-2003, 11:45 PM	#4
minibike Registered User Join Date: Jun 2002 Location: Lafayette, LA Posts: 500	I have the radiator and fans out of a 94 camaro. __________________ 69 SWB LT1/4L60E www.classicplace.com

03-25-2003, 11:55 PM	#5
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	Do you think the camaro setup would work with the stock truck radiator....? __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

03-26-2003, 12:01 AM	#6
minibike Registered User Join Date: Jun 2002 Location: Lafayette, LA Posts: 500	It is almost exactly the same size. __________________ 69 SWB LT1/4L60E www.classicplace.com

03-26-2003, 12:06 AM	#7
minibike Registered User Join Date: Jun 2002 Location: Lafayette, LA Posts: 500	It is about 18" tall by 25" wide by 5-1/2" deep. I have the 94 camaro radiator in mine...all I had to do was move the radiator supports (parts with rubber in them) out a little. __________________ 69 SWB LT1/4L60E www.classicplace.com

03-26-2003, 12:11 AM	#8
minibike Registered User Join Date: Jun 2002 Location: Lafayette, LA Posts: 500	not the best pic... Attached Images __________________ 69 SWB LT1/4L60E www.classicplace.com

03-26-2003, 12:13 AM	#9
minibike Registered User Join Date: Jun 2002 Location: Lafayette, LA Posts: 500	another... Attached Images __________________ 69 SWB LT1/4L60E www.classicplace.com

03-26-2003, 01:00 AM	#10
Low69CST Registered User Join Date: May 2000 Location: Frankfort, Kentucky, USA Posts: 2,163	i have a flexalite set up on my 400 small block. had no problems at all __________________ '69 CST Short fleetside Lowered, 400 small block, 700R4, 4 wheel disc brakes, front sway bar & rear camaro sway bar (in progress) '87 V10 4x4 Short Fleetside Quad Suspension and Dual Tanks

03-26-2003, 10:16 AM	#11
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Someone mentioned in the past that lated 80's to early 90's Furd Taurus use a 2 dual speed fans. Have also heard that Lincoln Mark IV's have a very powerful setup. Check out this link http://www.geocities.com/smithmonte/...rkVIII_Fan.htm __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

03-26-2003, 10:24 AM	#12
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	link no worky Anyone have a wirng diagram for a dual fan setup? Seems like you should run a 20 amp inline fuse from each fan, have it hooked to an thermostat and an in cab switch?? __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

03-26-2003, 12:57 PM	#13
Jesse 67 c-10 Registered User Join Date: Feb 2000 Location: Edmonton, Alberta, Canada Posts: 599	I got 2 fans from a chevy lumina, earlly 90's, they move a lot of air! made my own brakets cause they're set in some plastic crap but they work great. when I hit the switch if its hot idleing it goes from 200 to 180 in less than a min and keeps dropping after. You need a heavy duty relay, when you get the fans hook em up with an old ammeter to see the draw, then you'll know what relay and fuse to get. Good luck! Jesse __________________ Edmonton, Alberta, 67 c-10, Long fleet, front disks, 5 lug rear end, 327 with Vortechs, edlbrock manifold, comp cams XE 256, 600cfm carb. Backed by a getrag 5 speed and 1 piece driveshaft. 1993 Dihatsu Hijet Jumbo cab 4x4, currently converting to battery electric power.

03-26-2003, 01:08 PM	#14
Lippyp English Chevy Owner Join Date: May 2002 Location: Shropshire, UK/ Lot, France Posts: 1,848	I'd also put a relay in the circuit to each fan, that way you aren't putting a huge current through your thermostat/switch or trying to thread heavy guage wires through your bulkhead. The single electric fan in my truck (from something Japanese!) was fitted by the previous owner and was wired without a relay. One day I put my hand up behind the dashboard switch (no thermostatic controller yet) in traffic and found that the switch contacts were too hot to touch due to the huge current drawn by the fan going through the switch. Also when turned off the fan would windmill in the ram air coming in the grille and act as a dynamo and light the switch up...weird! I think Wes has posted a wiring diagram up here before, I'd jsut do a search on electric fan and see what threads you get. __________________ Phil '67 C10 long fleet. 350/TH350, 4 bbl Carter, K&N, Dual exhaust, loads of stuff coming soon 2001 S10 Blazer Daily Driver, bone stock 4 door 4x4 with manual transmission

03-26-2003, 01:14 PM	#15
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Linky worky for me __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14



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03-26-2003, 01:21 PM	#16
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	Not nice to mess with the board members Yukon................. tried the link, said it would be back in an hour.............sounds like someone went to lunch........... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

03-26-2003, 01:27 PM	#17
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Good ole Geocities! It was in my cache, that why I was still able to pull it up, dang it Dubie, you got me on that one! Do try to check the link out, there is lots of good info in it on this setup. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

03-26-2003, 01:43 PM	#18
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	Yukon, site is back up and running...... That's alot of info to Diegest at one time........... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

03-26-2003, 02:50 PM	#19
Long Knight Spank 'em if you got 'em! Join Date: Nov 2002 Location: Kansas City Posts: 628	Here is a pic of an elec. fan someone posted a while back that I was going to use for imspiration. Attached Images __________________ Long Knight '71 C-20, 350ci, TH350, Edl. 1406 Carb w/elec.choke, Ignitor ignition, Viper Tires, Orange Dipstick

03-26-2003, 04:00 PM	#20
HotRod929 Registered User Join Date: Mar 2002 Location: Bondurant, IA but in Worcester, MA for school Posts: 767	I think that picture of the dual fan setup is sold by www.classicheartbeat.com as a kit. I think Im gonna go that route with my truck. HotRod __________________ 1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/

03-26-2003, 04:17 PM	#21
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	long knight................that would be inspiration................... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

03-26-2003, 04:54 PM	#22
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Anyone using electric fans care to comment on the noise factor, if any?? Kenneth __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

03-26-2003, 04:58 PM	#23
Long Knight Spank 'em if you got 'em! Join Date: Nov 2002 Location: Kansas City Posts: 628	Right now mine goes WHAAAAAAAAAA! I heard an electric one come on once and it went WHrrrrrrrrr. Hope that helps. Do electric fans help with mpg? __________________ Long Knight '71 C-20, 350ci, TH350, Edl. 1406 Carb w/elec.choke, Ignitor ignition, Viper Tires, Orange Dipstick

03-26-2003, 05:10 PM	#24
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	I heard they also help with a small HP gain __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

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